Forming limits of aluminum tubes in tube hydroforming

알루미늄 튜브 하이드로포밍의 성형한계

  • 조완제 (경북대학교 기계공학부 대학원) ;
  • 이상영 (경북대학교 기계공학부 대학원) ;
  • 김영석 (경북대학교 기계공학부) ;
  • 이상용 (한국기계연구원 공정연구부)
  • Published : 2003.05.01


Recently social demands of fuel economy and environmental regulations require the development of light materials and new manufacturing technologies. In this point, the aluminum tube hydroforming process which is satisfied with good strength-to-weight ratio and recyclability is innovative concept. However the level of the aluminum tube hydroforming technology is low in comparison with that of steel tube hydroforming. In this paper, the hydroformability of aluminum tubes in different heat treatments is presented. Theoretical results for forming limits of the wrinkling and bursting are compared with experimental results of aluminum tubes.